>>21429349 (OP)Oil, fat, chargrilled, juicy, satisfying. Sometimes a nice crust is good.
Good ingredients, in-house burger recipe, typically 75% - 25% meat fat ratio, cooked properly. A nice soft roll and a juicy hot burger patty chargrilled with trimmings of your choice.
Now you can smash it on a flatiron if you want and do smash or OK-fried burgers with onions, and those are great too, sure. But chargrilled over hot coals or wood is just always great no matter what.
And it has to be well-seasoned. Salt, pepper, more than you think.
>tl;dr method and seasonings > technique > trimmings